| 제목 |
배기가스의 온도 및 HC와 O2의 조성 변화에 따른 DOC-CDPF의 재생 특성에 관한 실험적 연구 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
조용석(국민대학교), 이성욱(국민대학교), 박영준(국민대학교), 윤여빈(국민대학교), 이정섭(국민대학교) |
| Key Words |
CDPF(촉매코팅 매연여과장치), Regeneration(재생), PM(입자상물질), DOC(디젤산화촉매), |
| 초록 |
A catalyzed diesel particulate filter (CDPF) causes the progressive increase in back pressure of an exhaust system due to the loading of soot particles. To minimize pressure drop which is generated by CDPF, the filter should be regenerated when it collects a certain quantity of soot. It is important to know characteristics of regeneration of CDPF with various of exhaust gas temperatures and compositions. The oxidation of HC in DOC leads to increase gas temperature of DOC downstream. The increased gas temperature by DOC has an positive effect on CDPF regeneration. This study presents characteristics of regeneration of CDPF with DOC according to various gas composition, such as HC and O2 concentration. The test-rig is used to control each gas composition and temperature during regeneration of CDPF. Experimental results indicate that the increased concentration of O2 regenerates DPF more actively. With increasing HC concentration, the gas temperature of CDPF upstream increased due to more oxidation of HC. But excessive supply of HC leads to decrease of O2 concentration in the CDPF, which makes it hard to regenerate CDPF. |
| 원문(PDF) |
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